Geography (Rocks)

What are the three main types of rock?

The three main types of rock are igneous, sedimentary, and metamorphic.

What is basalt?

Basalt is a dark, smooth rock that comes from cooled lava. It's usually found in areas where there have been volcanic eruptions.

What is granite like?

Granite is a tough, grainy rock that's usually light-colored. It's made of minerals like quartz and feldspar and comes in different colors and patterns.

How do igneous rocks form?

Igneous rocks form from the solidification of molten magma or lava.

How do sedimentary rocks form?

Sedimentary rocks form when bits of rocks, minerals, and organic materials pile up and stick together, usually in water.

What is limestone made of?

Limestone is mostly made of shells and corals that pile up in shallow seas. It can also contain bits of other minerals

What is sandstone made of?

Sandstone is made mostly of sand grains that get compacted together. It mainly contains quartz but can have other minerals too.

How are metamorphic rocks formed?

Metamorphic rocks are formed when existing rocks are changed by heat, pressure, or chemical processes over a long period of time.

What is slate?

Slate is a fine-grained metamorphic rock that forms from shale. It can be split into thin, flat pieces

What is marble?

Marble is a metamorphic rock that comes from limestone. Its minerals' crystals reform and lock together under heat and pressure.

Why does basalt have tiny crystals?

Basalt has tiny crystals because it cools quickly on the surface.

Why does granite have big crystals?

Granite has big crystals because it cools slowly underground.

Why does slate split into flat layers?

Slate splits into flat layers because its minerals line up, making it easy to break along those surfaces. It gets changed from shale due to heat and pressure.

How do the crystals in marble form?

The crystals in marble form when limestone is heated and pressed, causing the minerals to come together and solidify.

What is an example of an igneous rock at the Giant's Causeway?

Basalt is an igneous rock found at the Giant's Causeway.

What is an example of an igneous rock at the Giant's Causeway?

Basalt is an igneous rock found at the Giant's Causeway.